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質問 # 41
Which of the following actions is most likely associated with database use?
- A. Creating diagrams
- B. Querying
- C. File sharing
- D. Printing
正解：B
解説：
The action that is most likely associated with database use is querying. Querying is the process of retrieving data from a database based on certain criteria or conditions. Querying allows users to access specific information from large amounts of data stored in tables. Querying can be done using SQL (Structured Query Language), which is a standard language for interacting with relational databases. SQL queries can perform various operations, such as selecting, inserting, updating, deleting, or joining data from tables. Creating diagrams is not an action that is associated with database use, but rather with software development or design. Creating diagrams can help visualize the structure, logic, or flow of a program or an algorithm. Examples of diagrams include flowcharts, UML diagrams, ER diagrams, etc. File sharing is not an action that is associated with database use, but rather with network use. File sharing is the process of allowing users to access or transfer files over a network. File sharing can be done using various protocols, such as FTP, SMB, NFS, etc. Printing is not an action that is associated with database use, but rather with output device use. Printing is the process of producing hard copies of documents, images, or other data on paper or other media using a printer. References: The Official CompTIA IT Fundamentals (ITF+) Student Guide (Exam FC0-U61), Chapter 6: Database Fundamentals1
質問 # 42
A user needs an interface that supports both video and data. Which of the following will meet this requirement?
- A. DVI
- B. VGA
- C. FireWire
- D. Thunderbolt
正解：D
解説：
Thunderbolt is an interface that supports both video and data. Thunderbolt is a high-speed serial interface that can connect multiple devices to a computer using one cable. Thunderbolt can support both DisplayPort and PCI Express protocols, which means it can transfer both video and data signals simultaneously. Thunderbolt can also provide power to connected devices and support daisy-chaining up to six devices per port.
Thunderbolt offers faster data transfer rates than USB or FireWire interfaces. VGA is an interface that supports only video. VGA stands for Video Graphics Array, which is an analog interface that can connect monitors to computers using 15-pin connectors. VGA can only carry video signals and does not support audio or data transfer. VGA also has lower resolution and quality than digital interfaces such as HDMI or DVI. DVI is an interface that supports only video as well. DVI stands for Digital Visual Interface, which is a digital interface that can connect monitors to computers using 24-pin connectors. DVI can carry either analog or digital video signals depending on the type of connector used (DVI-A for analog, DVI-D for digital, or DVI-I for both). DVI does not support audio or data transfer either. FireWire is an interface that supports only data.
質問 # 43
The computer language that is closest to machine code is:
- A. markup language
- B. query language
- C. assembly language
- D. scripting language
正解：C
解説：
Assembly language is a low-level programming language that uses mnemonics or symbolic names to represent machine code instructions. Machine code is the binary code that is directly executed by the processor.
Assembly language is the closest to machine code among the options given because it has a one-to-one correspondence with machine code instructions. Query language, scripting language, and markup language are not programming languages that are close to machine code because they use higher-level syntax or commands that need to be translated or interpreted by other programs before execution. References: CompTIA IT Fundamentals+ Study Guide: Exam FC0-U61, Second Edition, Chapter 4: Programming Concepts and Data Structures, page 139.
質問 # 44
Employee information is stored in a database. Which of the following BEST describes where all of an employee's information is stored?
- A. Report
- B. Record
- C. Procedure
- D. Column
正解：B
解説：
Explanation
A record is a collection of related fields or attributes that store information about a specific entity or object in a database. For example, an employee record would store information such as name, ID, department, salary, etc.
A record would be the best description of where all of an employee's information is stored in a database. A report is a formatted presentation of data from a database, not a storage unit. A column is a vertical arrangement of fields or attributes that store the same type of information for different records, not all of an employee's information. A procedure is a set of instructions or commands that perform a specific task on a database, not a storage unit. References: CompTIA IT Fundamentals+ Study Guide: Exam FC0-U61, Second Edition, Chapter 5: Database Fundamentals, page 193.
質問 # 45
A small company wants to set up a server that is accessible from the company network as well as the Internet.
Which of the following is MOST important to determine before allowing employees to access the server remotely?
- A. The employees' home ISP speeds
- B. A security method of allowing connections
- C. The geographical location of the employees
- D. The quality of the computer used to connect
正解：B
解説：
Explanation
The most important factor to determine before allowing employees to access the server remotely is a security method of allowing connections. This means that the company needs to implement a way of verifying the identity and authorization of the employees who want to connect to the server from outside the company network or the internet. A security method of allowing connections can include using passwords, tokens, certificates, VPNs, firewalls, or encryption. A security method of allowing connections can prevent unauthorized access, data breaches, malware infections, or other cyberattacks on the server1415. References := CompTIA IT Fundamentals (ITF+) Study Guide, 2nd Edition, Chapter 6: Security3; Remote Access Security Best Practices - Cisco Meraki
質問 # 46
A technician is called to replace a display for a workstation. Which of the following would MOST likely be used to connect the display to the workstation?
- A. DVI
- B. USB
- C. NFC
- D. DSL
正解：A
解説：
DVI is the most likely connector that would be used to connect a display to a workstation. DVI stands for Digital Visual Interface, which is a standard that transmits digital video signals between devices. DVI can support high-resolution displays and multiple monitors. DVI connectors have three types: DVI-A (analog), DVI-D (digital), and DVI-I (integrated). DVI connectors have different numbers of pins depending on the type and mode. References : The Official CompTIA IT Fundamentals (ITF+) Study Guide (FC0-U61), page 54.
質問 # 47
A database administrator finds that a table is not needed in a relational database. Which of the following commands is used to completely remove the table and its data?
- A. ALTER
- B. DELETE
- C. UPDATE
- D. DROP
正解：D
質問 # 48
A technician is troubleshooting an error message and tests the same program on a separate, identical machine. Which of the following troubleshooting methodology steps is this an example of?
- A. Gather information
- B. question users
- C. Divide and conquer
- D. Duplicate the problem
正解：D
解説：
Explanation
Antivirus is a type of software that protects a computer or device from malicious software or malware, such as viruses, worms, trojans, spyware, ransomware, etc. Antivirus software requires the most frequent updating to remain effective because new malware threats are constantly emerging and evolving. Antivirus software needs to update its database of malware signatures or definitions, which are the patterns or characteristics that identify known malware. Antivirus software also needs to update its scanning engine or algorithm, which is the method or technique that detects and removes malware. Host firewall, web browser, and device drivers are not types of software that require the most frequent updating to remain effective. Host firewall is a type of software that monitors and controls the network traffic to or from a computer or device based on rules or policies. Web browser is a type of software that allows users to access and view web pages or web applications on the Internet. Device drivers are types of software that enable the communication and interaction between the operating system and the hardware devices. References: CompTIA IT Fundamentals+ Study Guide: Exam FC0-U61, Second Edition, Chapter 8: Security Concepts, page 305.
質問 # 49
A developer is writing a script to calculate a bank account balance within two decimal places. Which of the following data types should the developer select to store the balance?
- A. Integer
- B. Char
- C. Float
- D. Boolean
正解：C
解説：
Explanation
A float is a data type that can store decimal numbers, such as 3.14 or 0.01. This is suitable for calculating a bank account balance within two decimal places, as it can represent fractions of a dollar. A boolean is a data type that can only store true or false values, which is not useful for numerical calculations. An integer is a data type that can store whole numbers, such as 1 or 100, but not decimals. A char is a data type that can store a single character, such as 'a' or '9', but not multiple characters or decimals. References: CompTIA IT Fundamentals (ITF+) Study Guide: Exam FC0-U61, Second Edition, Chapter 4: Software Development Concepts, page 1371
質問 # 50
The IT department has established a new password policy for employees. Specifically, the policy reads:
* Passwords must not contain common dictionary words
* Passwords must contain at least one special character.
* Passwords must be different from the las six passwords used.
* Passwords must use at least one capital letter or number.
Which of the following practices are being employed? (Select TWO).
- A. Password length
- B. Password complexity
- C. Password age
- D. Passwords history
- E. Password lockout
- F. Password expiration
正解：B、D
質問 # 51
When following the troubleshooting methodology, which of the following should be performed last?
- A. Establish a plan.
- B. Document findings.
- C. Determine the cause.
- D. Verify functionality.
正解：B
解説：
Explanation
The troubleshooting methodology is a systematic process of identifying and resolving problems with computers or other devices. The troubleshooting methodology consists of six steps: identify the problem, establish a theory of probable cause, test the theory to determine cause, establish a plan of action to resolve the problem and implement the solution, verify full system functionality and if applicable implement preventive measures, document findings/actions/outcomes. The last step of the troubleshooting methodology is to document findings/actions/outcomes. This step involves recording what was done to solve the problem, what was learned from the process, what preventive measures were taken (if any), and any feedback from the customer or user. Documenting findings/actions/outcomes is important for several reasons: it helps keep track of what was done and why; it helps avoid repeating the same steps or mistakes in the future; it helps share knowledge and best practices with others; it helps improve customer satisfaction and trust; it helps comply with organizational policies or regulations
質問 # 52
A company is concerned with ensuring its databases are highly available. Which of the following can be used to increase database availability?
- A. Failover
- B. Prioritization
- C. Indexes
- D. Backups
正解：A
解説：
Failover is a technique that ensures high availability of databases by switching to a backup or standby server in case of a primary server failure. Failover can be automatic or manual, depending on the configuration. Failover can prevent data loss and downtime for critical applications that rely on databases. References: The Official CompTIA IT Fundamentals (ITF+) Student Guide (Exam FC0-U61), Chapter 5, Section 5.3, Page 222.
質問 # 53
Which of the following is a compiled language?
- A. JScript
- B. Perl
- C. PowerShell
- D. Java
正解：D
解説：
A compiled language is a programming language that requires its source code to be converted into machine code before it can be executed by the CPU. A compiled language uses a compiler, which is a program that translates the source code into an executable file that contains machine code. A compiled language typically runs faster and more efficiently than an interpreted language, which does not need to be compiled before execution. Java is an example of a compiled language that can run on different platforms using the Java Virtual Machine (JVM), which interprets the machine code for the specific hardware1112. References := CompTIA IT Fundamentals (ITF+) Study Guide, 2nd Edition, Chapter 4: Software Development3; What is Compiled Language? - Definition from Techopedia13
質問 # 54
For which of the following is a relational database management system MOST commonly used?
- A. Generating reports
- B. Creating diagrams
- C. Storing information
- D. Building flowcharts
正解：C
解説：
A relational database management system (RDBMS) is most commonly used for storing information in a structured and organized way. A RDBMS stores data in tables, which consist of rows and columns. Each row represents a record or an entity, and each column represents an attribute or a property of the entity. A RDBMS allows users to create, update, delete, and query data using a standard language called SQL (Structured Query Language). A RDBMS also enforces rules and constraints to ensure data integrity and consistency3465.
References := CompTIA IT Fundamentals (ITF+) Study Guide, 2nd Edition, Chapter 5: Database Fundamentals2; What is RDBMS (Relational Database Management System) - Javatpoint5; What is a Relational Database Management System? | Microsoft Azure
質問 # 55
Which of the following operating systems do not require extensions on files to execute a program? (Select TWO).
- A. Android
- B. Linux
- C. UNIX
- D. Windows Server 2012
- E. Windows 8
- F. Windows 7
正解：B、C
解説：
UNIX and Linux are the examples of operating systems that do not require extensions on files to execute a program. UNIX and Linux are operating systems that are based on the same kernel and share many features and commands. UNIX and Linux do not rely on file extensions to determine the file type or function. Instead, they use file permissions and attributes to indicate whether a file is executable or not. File extensions are optional and mainly used for human readability or compatibility with other systems. References : The Official CompTIA IT Fundamentals (ITF+) Study Guide (FC0-U61), page 86.
質問 # 56
Which of the following storage types is MOST vulnerable to magnetic damage?
- A. HDD
- B. Optical
- C. SSD
- D. Flash
正解：A
質問 # 57
Which of the following storage types uses platters to store data?
- A. Solid-state drive
- B. Optical drive
- C. Flash drive
- D. Hard drive
正解：D
解説：
Explanation
A hard drive, also known as a hard disk drive (HDD), is a type of storage device that uses one or more rotating platters coated with magnetic material to store data. The platters are accessed by read/write heads that move across the surface of the platters as they spin. The data is stored as tiny magnetic regions on the platters, which can be changed or read by the heads. Hard drives are non-volatile, meaning they retain data even when power is off. Hard drives offer large storage capacity, low cost per gigabyte, and fast data transfer rates compared to other storage types. However, they are also prone to mechanical failures, noise, heat, and physical damage
質問 # 58
Which of the following data types should a developer use when creating a variable to hold a postal code?
- A. Integer
- B. Boolean
- C. String
- D. Float
正解：C
質問 # 59
The IT department has established a new password policy for employees. Specifically, the policy reads:
Passwords must not contain common dictionary words
Passwords must contain at least one special character.
Passwords must be different from the las six passwords used.
Passwords must use at least one capital letter or number.
Which of the following practices are being employed? (Select TWO).
- A. Password length
- B. Password complexity
- C. Password age
- D. Passwords history
- E. Password lockout
- F. Password expiration
正解：B、D
解説：
Password complexity and password history are two practices that are being employed by the IT department to establish a new password policy for employees. Password complexity is the requirement that passwords must contain a combination of different types of characters, such as letters, numbers, and symbols. Password complexity makes passwords harder to guess or crack by attackers. Password history is the record of the previous passwords used by a user. Password history prevents users from reusing the same passwords over and over again, which reduces the risk of compromise. References : The Official CompTIA IT Fundamentals (ITF+) Study Guide (FC0-U61), page 208.
質問 # 60
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